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<html xmlns="http://www.w3.org/1999/xhtml" xmlns:unused="http://unused.namespace.com/unused" xml:lang="en" lang="en">
<head>
    <title>HTML5</title>
</head>
<body>
<div>
    <article>
        <h1>Internet Explorer 9</h1>
        <p>Windows Internet Explorer 9 (abbreviated as IE9) was released to
            the  public on March 14, 2011 at 21:00 PDT.....</p>
    </article>

    <aside>
        <h4>Epcot Center</h4>
        <p>The Epcot Center is a theme park in Disney World, Florida.</p>
    </aside>

    <audio  controls="controls" autoplay="autoplay">
        <source src="echild_s01_all.m4a" type="audio/mpeg"/>
        Your browser does not support the audio tag.
    </audio>
</div>
</body>
</html>
